Não informado. (1950). Astronautics Information Literature Search. Jet Propulsion Laboratory, California Institute of Technology.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Astronautics Information Literature Search. Pasadena, Calif: Jet Propulsion Laboratory, California Institute of Technology, 1950.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Astronautics Information Literature Search. Jet Propulsion Laboratory, California Institute of Technology, 1950.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.